Superheater for locomotives.



PATENTED FEB. 5, 1907.

H. v. WILLE. SUPERHBATER PoR LoooMoTIVEs.

APPLICATION FILED NOV.1,1905.

2 SHEETS-SHEET] PATBNTED PEB. 5. 1907.

H. v. WILLE. SUPERHEATBR POR LocoMoTLvs.

APPLICATION FILED NOV.1.190.

2 SHEETS-SHEET 2.

-' n strains retratar onirica.

yHENRY V. WILLE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO BURN- HAM, WILLIAMS cA COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A

FIRM.

SUPERHEATER FOR LCOWIOTIVES.

Specification of Letters Patent.

Patenten Feb. 5,1907.

Application led Novemhei 1, 1905. Serial No. 2854.47.

-wili be utilized to heat the steam passing through the superhoater.

Other features of the invention relate to Y details of construction which will be described hereinafter.

In the accompanying drawings, Figure l is ,a longitudinal sectional view oi a locomotive-boiler illustrating my invention. Fig. 2 is a transverse sectional view on the line 2 2, Fig. l. Fig. 3 is a sectional view showing the throttle-valve situated in the smoke-box of the locomotive, and Fig. 4 is a modified rivoiin of the throttle-valve casing shown iii A is the boiler-casing of the locomotive of the ordinary type. B is the fire-box. b is the rear tube-sheet, and b! is the forward tube-sheet. o a are tubes leading from the tube-sheetb to the tube-sheet b. C is the smoke-box, and c is the stack.

It will be noticed in referring to Figs. l and 2 of the drawings, that the greater proportion of the tubes are connected to the tubesheets b b and are for the purpose of making steam in the main boiler A. I, however, connect aseiies of tubes c in the upper portion oi the boiler to the rear tube-sheet b andv extend these tubos through a rear head d of a superheater D and through the superheater, securing them to a 'forward head d', as shown in' Fig. i. The tubes af in the present instance are longer than the tubes 1, and the su erheater-casing extends through the forwar tube-sheet b and into the smokebox C, as indicated in Fig. 1.

In the presentinstance there is a casing D', which surrounds a portion of the siiperheater D, and this casing extends also through the will not a'eot the dry steam inthe super-1 There is an' air-space formed' heater. There 4is a segment of a ring d2, which supports the forward end of the superheater, and there is a ring da, which closes the opposite end oi the air-space.

The tube-sheet b has a iiange b2, and between this flange and a flanged ring b3 is.

mounted a joint-ring 5*, so that a tight -ioint is formed between the outer cylindrical casinof D and the tube-sheet B', the parts being heId by bolts b5, which pass through the flange of the ring b3, the tube-sheet, and a ring b. Other forms of joints may be used without departing from my invention.

The casing D stops short of the rear end of the superheater D, as illustrated in Fig. 1, so that the steam-pipe E may be coupled to the casing. In the present instance this steampipe is turned up into the dome A of the boiler and is provided with the usual throttle-valve e, connected by rods e e2 and bellcrank lever es. The i'od e2 leads to the cab of the locomotive.

The opposite-end of the casing D sto s short of the front end ofthe superlieater so that the steemipes F leading to the cyliiider can he ieadii;v coupled to the casing D of 'the su erheater-` It will e understood that the throttle-valve may be mounted either in the steam-pipe E or the pi e leading froiii the superlieater to the cyliii'( crs, and when the throttle-valve is situated between the supciheater and the cylinders I prefer to construct the casing in the manner shown in Fig. 3, in which E is the steani-pipe leading from the boiler. This pipe may either lead from the steam-dome, as shown, or may lead from the upper portion of the boiler when it is desired to dispense with the steam-dome.

I is the valve-casing having a passage i leading from the pipe E to an opening in the supeilieating-casing. The valve-casinfr also has a passage ji communicating with the pipes F leading to the cylinders. There is one of these ipes on eachside of the valvecasing. In t iis instance the superlieater is divided by a baffle-plate d2, so that steam will pass through'the superheater in a circuitous passage.

The throttIe-valve e4 is connected to a" stem es and is a double valve in the present instance and is eo mounted in the passage lras to out oii iiovf and allow the steam to IOC 

